We made a video highlighting some of the most common mistakes people make when servicing automatic transmissions. Many of these mistakes can lead to costly repairs if not addressed correctly.
One major issue we cover is the misconception that simply washing or draining the transmission system is enough. This is similar to changing engine oil but never replacing the oil filter. Without replacing the filter, contaminants remain in the system, reducing the effectiveness of the service and potentially causing further damage.
Many manufacturers advertise their transmissions as ‘fill for life,’ suggesting that the oil never needs to be changed. In reality, transmission oil, like engine oil, degrades over time and requires regular replacement. Failing to change it can lead to reduced efficiency and long term mechanical problems.
We also warn against waiting until the transmission is already showing mechanical symptoms before performing an oil change. Doing so can increase solenoid pressures and, in some cases, accelerate total transmission failure rather than fixing the issue.
During inspections, technicians often find significant metal debris in the transmission pan. This indicates serious internal damage and shows that previous flushes or partial services were ineffective. In these cases, comprehensive repair or even replacement of the transmission is usually necessary.
Regular, proper servicing of your automatic transmission is critical for its longevity. Always replace the filter, follow manufacturer recommendations for oil changes, and never rely solely on ‘fill for life’ claims. Addressing problems early can save you from costly repairs down the line.
